Abstract #2700

Compressed sensing three-directional 3D velocity imaging of the skeletal muscle during evoked isometric contraction of the arm

Xeni Deligianni^1,2, Francesco Santini^1,2, Anna Hirschmann³, Ning Jin⁴, Nicolas Place⁵, Oliver Bieri^1,2, and Claudia Weidensteiner^1,2

¹Radiology/Division of Radiological Physics, University Hospital of Basel, Basel, Switzerland, ²Biomedical Engineering, University of Basel, Basel, Switzerland, ³Radiology, University Hospital of Basel, Basel, Switzerland, ⁴Siemens Medical Solutions, Cleveland, Cleveland, OH, United States, ⁵Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland

MRI of the upper extremities is important for the follow-up of muscle dystrophies. The goal of this study was to investigate the feasibility of 4D-velocity imaging during neuromuscular electrical stimulation(NMES) of the arm, standardized with the force output. Two healthy volunteers were scanned at 3T during isometric contraction of the biceps brachii for different elbow angles. While the force output was different in intensity, the waveforms of force and strain were similar. In conclusion, it was shown that it is possible to acquire 3D-dynamic velocity data synchronized with NMES of the arm and simultaneously record the evoked force.

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